Instructions for splitting a directory in a repo and merge into another one

split-and-merge.md

1. Split directory in a branch in source repository

   git subtree split -P <name-of-folder> -b <name-of-new-branch>
   

2. Add remote of source in destination repository and fetch

   git remote add -f <source> <source-repository>
   

3. Merge splitted branch into destination without a new commit

   git merge -s ours --no-commit <name-of-source-branch>
   

4. Import tree into new path

   git read-tree --prefix=<new-path> -u <name-of-source-branch>
   

5. Commit merge

   git commit
   

Wee!